关节轴承是一种特殊结构的滑动轴承。它的结构比滚动轴承简单，其主要是由一个有外球面的内圈和一个有内球面的外圈组成，能承受较大的负荷，根据其不同的类型和结构，可以承受径向负荷、轴向负荷或径向、轴向同时存在的联合负荷。关节轴承一般用于速度较低的摆动运动（即角运动），由于滑动表面为球面形，亦可在一定角度范围内作倾斜运动（即调心运动），在支承轴与轴壳孔不同心度较大时，仍能正常工作。应用于工程液压油缸,锻压机床,工程机械,自动化设备，汽车减震器，水利机械等行业。

      Joint bearing is a special structure of sliding bearing. Its structure is simpler than the rolling bearing. It is mainly composed of an inner sphere with an outer sphere and an outer ring with an inner sphere. It can bear a large load. According to its different types and structures, it can bear the joint load of radial load, axial load or radial and axial. Joint bearings are generally used for low speed swinging motion (angular motion). Because the sliding surface is spherical and can also be tilted in a certain angle range, it can still work normally when the degree of inconcentricity of the supporting axis and the shaft shell is large. It is applied to engineering hydraulic cylinder, forging machine, engineering machinery, automation equipment, auto shock absorber, water conservancy machinery and so on.